JP2013150516A - Electric connection box, terminal and side cover constituting electric connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connection box which allows for enhancement of workability when passing a bolt through the bolt insertion hole of a terminal, by preventing displacement of the terminal attached to a side cover.SOLUTION: The electric connection box includes a case body, a bolt standing from the upper surface of the case body, a terminal 4 having one end provided with a bolt insertion hole 40 and the other end provided with a wire connection part 43, and a side cover 5 to which the terminal 4 is attached. A concave notch 44 is provided in the outer edge of the terminal 4, and the side cover 5 is provided with a convex displacement regulation part 94 positioned within the notch 44, and a backlash part 95 projecting from the displacement regulation part 94 and having a pointed tip. In the electric connection box, when the side cover 5 is attached to the side face of the case body, the bolt is passed through the bolt insertion hole 40 of the terminal 4, and when a nut is screwed over the bolt, the terminal 4 is fixed to the case body.

Description

  The present invention relates to an electrical connection box mounted on an automobile, and terminals and side covers constituting the electrical connection box.

  A variety of electronic devices are mounted on automobiles. In order to perform power supply and signal transmission to these various electronic devices, electrical junction boxes are arranged at appropriate locations in the automobile (see Patent Document 1).

  FIG. 7 is a perspective view showing a conventional electrical junction box. The electrical connection box 201 includes a case main body 202, a bolt 3 erected from the upper surface of the case main body 202, a bus bar 7 assembled to the case main body 202, a terminal 204 connected to the power line 8, and a terminal 204. And an attached side cover 205.

  The head of the bolt 3 is fixed to the case main body 202, and the shaft portion 32 is erected from the upper surface of the case main body 202 in a state where the shaft portion 32 is passed through the bolt insertion hole 70 provided in the bus bar 7. A nut (not shown) is screwed onto the shaft portion 32. The bolt 3 is for maintaining the state in which the bus bar 7 and the terminal 204 are electrically connected by sandwiching the bus bar 7 and the terminal 204 overlapped with the bus bar 7 between the nuts.

  The terminal 204 is obtained by pressing a metal plate or the like, and is provided with a bolt insertion hole 240 at one end and an electric wire connection at the other end. In the present specification, a flat portion provided with the bolt insertion hole 240 at one end portion of the terminal 204 is referred to as a “bus bar connection portion” and denoted by reference numeral 241. The bus bar connection portion 241 is a portion that is superimposed on the bus bar 7 and fixed to the case main body 202 by the bolt 3 and the nut.

  The side cover 205 includes a first cover 209 that sandwiches the terminal 204 and the power supply line 8 therebetween, and a second cover 210. Further, the power line 8 in the illustrated example is passed through the corrugated tube 6, and the corrugated tube 6 is also sandwiched between the first cover 209 and the second cover 210. Further, the first cover 209 is attached to the side surface of the case main body 202 to form the cover main body 290 constituting the outer wall of the case main body 202, the other end side of the terminal 204, the end of the power line 8, and the corrugated tube 6. And a sandwiching portion 291 that sandwiches the end portion between the second cover 210 and the second cover 210.

  In this electrical connection box 201, the side cover 205 to which the terminal 204 is attached is mounted on the side surface of the case body 202 in the direction of arrow B along the standing direction of the bolt 3, so that the bolt insertion hole 240 of the terminal 204 is inserted. Bolt 3 is passed. Further, when the nut is screwed onto the bolt 3, the terminal 204 is fixed to the case body 202 and the connection state between the terminal 204 and the bus bar 7 is maintained.

JP 2008-154212 A

  However, in the conventional electrical junction box 201 described above, the terminal 204 attached to the side cover 205 is displaced in the longitudinal direction (arrow A direction), and the side cover 205 is attached to the case main body 202. There is a problem that the bolt 3 is difficult to pass through the bolt insertion hole 240 and the workability is poor.

  Accordingly, the present invention provides an electrical connection box capable of improving workability when a bolt is passed through the bolt insertion hole of the terminal by preventing the displacement of the terminal attached to the side cover, and the electrical connection It aims at providing the terminal and side cover which comprise a box.

  In order to achieve the above object, the invention described in claim 1 includes a case main body, a bolt erected from the upper surface of the case main body, a bolt insertion hole at one end, and a wire connecting portion at the other end. A terminal fixed to the case main body by screwing the bolt through the bolt insertion hole and a nut being screwed into the bolt, and a side cover to which the terminal is attached, In the electrical junction box in which the bolt is passed through the bolt insertion hole of the terminal by attaching the side cover to the side surface of the case body, a concave notch or a convex protrusion is provided on the outer edge portion of the terminal. The side cover is provided with a positional deviation restricting portion formed in a convex shape positioned in the notch or a concave shape positioning the protruding portion inside. Is an electrical junction box to be.

  According to a second aspect of the present invention, in the first aspect of the present invention, the outer edge portion of the terminal is provided with a concave notch, and the side cover has a convex shape that is positioned in the notch. A formed misregistration restricting portion and a loosely stuffed portion protruding from the misregistration restricting portion and having a sharp tip are provided, and the loosely stuffed portion abuts against the inner surface of the notch. is there.

  The invention described in claim 3 is the invention described in claim 1, wherein a convex protrusion is provided on the outer edge portion of the terminal, and the side cover has a concave shape that positions the protrusion on the inside. A formed misregistration restricting portion and a backfilling portion protruding from the inner surface of the misregistration restricting portion and having a sharp tip are provided, and the backlashing portion abuts on the projecting portion. is there.

  The invention described in claim 4 is a terminal constituting the electrical junction box according to any one of claims 1 to 3.

  The invention described in claim 5 is a side cover constituting the electrical junction box according to any one of claims 1 to 3.

  According to the first aspect of the present invention, the outer edge portion of the terminal is provided with a concave notch or a convex protrusion, and the side cover is provided with the convex or the protrusion positioned in the notch. Since a position deviation restricting portion formed in a concave shape that positions the inner portion is provided, it is possible to prevent the position deviation of the terminal attached to the side cover, and for that purpose, the bolt is passed through the terminal bolt insertion hole. It is possible to provide an electrical junction box that can improve the workability at the time.

  According to the second aspect of the present invention, the outer edge portion of the terminal is provided with a concave notch, and the side cover is provided with a misregistration restricting portion formed in a convex shape positioned in the notch. And a backlashing portion that protrudes from the positional displacement restricting portion and has a sharp tip, and the backlashing portion abuts against the inner surface of the notch, thereby preventing the positional displacement of the terminal attached to the side cover. In addition, it is possible to provide an electrical junction box that can position the terminal at a more accurate position, and can further improve the workability when the bolt is passed through the bolt insertion hole of the terminal.

  According to the third aspect of the present invention, the outer edge portion of the terminal is provided with a protruding protrusion, and the side cover is provided with a position shift restricting portion formed in a concave shape that positions the protruding portion on the inside. And a backlashing portion that protrudes from the inner surface of the positional displacement restricting portion and has a sharp tip, and the backlashing portion abuts against the protruding portion, thereby preventing the positional displacement of the terminal attached to the side cover. In addition, it is possible to provide an electrical junction box that can position the terminal at a more accurate position, and can further improve the workability when the bolt is passed through the bolt insertion hole of the terminal.

It is a perspective view which shows the electrical junction box concerning the 1st Embodiment of this invention. FIG. 2 is a plan view of a first cover and terminals of the side cover shown in FIG. 1. It is an enlarged view of the C section in FIG. FIG. 3 is a plan view of the first cover shown in FIG. 2. It is the elements on larger scale which show the side cover and terminal concerning the 2nd Embodiment of this invention. It is the elements on larger scale which show the side cover and terminal concerning the 3rd Embodiment of this invention. It is a perspective view which shows the conventional electrical junction box.

(First embodiment)
The “electric connection box” according to the first embodiment of the present invention, and “terminals” and “side covers” constituting the electric connection box will be described with reference to FIGS.

  The electrical junction box 1 of the present invention is mounted on an automobile and supplies power and transmits signals to an electronic device mounted on the automobile. In the present invention, a junction block (also referred to as a junction box), a fuse block (also referred to as a fuse box), and a relay block (also referred to as a relay box) are collectively referred to as an electrical connection box.

  As shown in FIG. 1, the electrical junction box 1 is connected to a case body 2, a bus bar 7 assembled to the case body 2, a bolt 3 erected from the upper surface 2 a of the case body 2, and a power line 8. Terminal 4, side cover 5 attached to side surface 2 c of case body 2 with terminal 4 attached, a plurality of electronic components (not shown) attached to case body 2, and attached to upper surface 2 a of case body 2 And an upper cover (not shown).

  The case body 2 is made of synthetic resin. A cutout 21 a is provided in a portion of the outer wall 21 of the case body 2 where the side cover 5 is mounted.

  The bus bar 7 is a wiring member for branching electric power inputted by being electrically connected to the terminal 4 into a plurality of electric wires (not shown) via relays, fuses, connectors, etc. It is obtained by applying. The bus bar 7 is provided with a terminal connection portion 71 electrically connected to the terminal 4, a relay connection portion electrically connected to the relay, a fuse connection portion electrically connected to the fuse, and the like. Further, the terminal connection portion 71 is formed in a plate shape and is provided with a bolt insertion hole 70.

  The head of the bolt 3 is fixed to the case main body 2, and the shaft portion 32 is erected from the upper surface 2 a of the case main body 2 in a state where the bolt portion insertion hole 70 provided in the bus bar 7 is passed. A nut (not shown) is screwed onto the shaft portion 32. The bolt 3 is for maintaining the state in which the bus bar 7 and the terminal 4 are electrically connected with the bus bar 7 and the terminal 4 superimposed on the bus bar 7 sandwiched between the nuts.

  The power supply line 8 is an electric wire that supplies electric power from a power source such as a battery or an alternator to the bus bar 7 of the electrical connection box 1 and is composed of a core wire and an insulating sheath covering the core wire. Further, the power supply line 8 of this embodiment is passed through the corrugated tube 6.

  The terminal 4 is obtained by subjecting a metal plate to press working or the like. As shown in FIG. 2, the terminal 4 is provided with a bolt insertion hole 40 at one end and an electric wire connecting portion 43 at the other end. In the present specification, a flat portion provided with the bolt insertion hole 40 at one end portion of the terminal 4 is referred to as a “bus bar connection portion” and denoted by reference numeral 41. The bus bar connection portion 41 is a portion that is superimposed on the terminal connection portion 71 of the bus bar 7 and is fixed to the case body 2 by the bolt 3 and the nut. The wire connection portion 43 includes a plate portion 43c for positioning the power supply line 8 on the surface, a pair of core wire crimping pieces 43a for caulking the core wire of the power supply wire 8, and a pair of insulating skin caulking pieces 43b for caulking the insulation sheath of the power supply wire 8. And is composed of. Further, the terminal 4 of the present invention is provided with a concave notch 44 at the outer edge portion of the bus bar connection portion 41. In the present embodiment, a pair of notches 44 are provided at both edges in the width direction of the bus bar connection portion 41.

  The side cover 5 includes a second cover 10 and a first cover 9 that sandwiches the other end side of the terminal 4, the power supply line 8 and the corrugated tube 6 therebetween. The first cover 9 and the second cover 10 are made of synthetic resin.

  As shown in FIG. 4, the first cover 9 has a cover body 90 that is attached to the side surface 2 c of the case body 2 so as to close the notch 21 a and constitutes the outer wall 21 of the case body 2, and the terminal 4. The other end side of the terminal, the end portion of the power line 8 and the end portion of the corrugated tube 6 between the second cover 10 and the convex displacement that is positioned in the notch 44 of the terminal 4 A restricting portion 94 and a backlash filling portion 95 protruding from the misregistration restricting portion 94 and having a sharp tip are provided.

  The clamping portion 91 is formed in a bowl shape having a U-shaped cross section. A plurality of lock portions 92 are provided on the outer surface of the clamping portion 91. In addition, a plurality of ribs 93 are provided on the inner surface of the sandwiching portion 91 for positioning the corrugated tube 6 by biting into the small diameter portion of the corrugated tube 6 (small diameter portion in the bellows shape in which the large diameter portion and the small diameter portion are alternately arranged). It has been.

  A pair of the positional deviation restricting portions 94 are provided and are arranged at intervals in the width direction of the terminal 4. Further, a pair of the backlash filling portions 95 is provided and protrudes in the longitudinal direction of the terminal 4 from each misalignment restricting portion 94. The backlash filling portion 95 is formed in a triangular shape in plan view. As shown in FIGS. 2 and 3, the misregistration restricting portion 94 is positioned in the notch 44 of the terminal 4, thereby positioning the terminal 4 in the width direction and the longitudinal direction (the direction of arrow A in FIG. 2). . Further, the backlash filling portion 95 is positioned in the cutout 44 and abuts against the inner surface of the cutout 44 so that the tip is crushed, thereby filling backlash in the longitudinal direction of the terminal 4 (in the direction of arrow A in FIG. 2). Thus, the terminal 4 is accurately positioned in the longitudinal direction.

  The second cover 10 has a plate-like holding portion that sandwiches the other end side of the terminal 4, the end portion of the power line 8, and the end portion of the corrugated tube 6 between the holding portion 91 of the first cover 9. 10a and a lock receiving portion 10b that engages with the lock portion 92 of the first cover 9 are provided.

  When the terminal 4 is attached to the side cover 5, the terminal 4, the power line 8, and the corrugated tube 6 are accommodated in the first cover 9 with the first cover 9 and the second cover 10 being separated. Then, the second cover 10 is attached to the first cover 9 so as to be assembled. Further, when the terminal 4, the power supply line 8, and the corrugated tube 6 are accommodated in the first cover 9, the positional deviation restricting portions 94 and the backlash filling portions 95 are accommodated so as to be positioned in the notches 44. Thus, the terminal 4 is accurately positioned with respect to the first cover 9, that is, the side cover 5.

  Further, the terminal 4 is such that a portion of the bus bar connection portion 41 on the side farther from the wire connection portion 43 than the pair of notches 44 protrudes from between the first cover 9 and the second cover 10 and the side cover 5. Is positioned outside. A portion of the terminal 4 closer to the wire connection part 43 than the pair of notches 44 is positioned in the side cover 5.

  In this electrical junction box 1, as shown by an arrow B in FIG. 1, the side cover 5 to which the terminal 4 is attached is attached to the side surface 2 c of the case body 2 along the standing direction of the bolt 3, The shaft portion 32 of the bolt 3 is passed through the bolt insertion hole 40 of the terminal 4, and the terminal connection portion 71 and the bus bar connection portion 41 are overlapped. In this operation, the terminal 4 is not displaced with respect to the side cover 5 as described above, so that the position of the bolt insertion hole 40 is not displaced with respect to the shaft portion 32 of the bolt 3 and can be smoothly operated. The shaft portion 32 is passed through the bolt insertion hole 40. Further, when the nut is screwed onto the bolt 3, the terminal 4 is fixed to the case body 2 and the connection state between the terminal 4 and the bus bar 7 is maintained.

(Second Embodiment)
The “terminal” and “side cover” according to the second embodiment of the present invention will be described with reference to FIG.

  In the first embodiment, the terminal 4 is provided with the notch 44 and the side cover 5 is provided with the convex positional displacement restricting portion 94. However, in the present embodiment, the outer edge portion of the terminal 4 ' A convex protrusion 45 is provided in place of the notch 44, and a first cover 9 'that constitutes the side cover is provided with a misregistration restricting portion 96 formed in a concave shape that positions the protrusion 45 inside. Yes.

  As described above, in the present invention, the “position shift restricting portion” provided on the side cover may be convex or concave. Similarly, the terminal may be provided with a concave notch 44 or a convex protrusion 45. In other words, the terminal may have a shape that meshes with the “positional displacement restricting portion”.

(Third embodiment)
A “terminal” and a “side cover” according to a third embodiment of the present invention will be described with reference to FIG.

  In the present embodiment, the back cover 95 is further provided on the first cover 9 ′ described in the second embodiment. The backlashing portion 95 protrudes from the inner surface of the positional deviation restricting portion 96, and by contacting the projecting portion 45 positioned inside the positional deviation restricting portion 96, the backlash in the longitudinal direction of the terminal 4 ′ is filled. The terminal 4 'is accurately positioned in the longitudinal direction. Further, the backlash filling portion 95 is formed in a triangular shape in plan view with a sharp tip, and abuts against the protruding portion 45 so that the tip is crushed.

  As described above, in the present invention, a configuration in which the “backlash filling portion 95” is provided together with the “positional displacement regulating portion” is most preferable, but this “backlash filling portion 95” is not an essential configuration.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Electrical junction box 2 Case main body 3 Bolt 4,4 'terminal 5 Side cover 40 Bolt insertion hole 43 Electric wire connection part 44 Notch 45 Protrusion part 94,96 Position shift regulation part 95 Backlash part

Claims (5)

A case body, a bolt erected from the upper surface of the case body, a bolt insertion hole is provided at one end, an electric wire connection portion is provided at the other end, and the bolt is passed through the bolt insertion hole. A terminal fixed to the case main body by screwing a nut to the bolt, and a side cover to which the terminal is attached, and the side cover is attached to a side surface of the case main body to thereby In the electrical junction box in which the bolt is passed through the bolt insertion hole,
The outer edge of the terminal is provided with a concave notch or a convex protrusion,
An electrical connection box, wherein the side cover is provided with a positional deviation restricting portion formed in a convex shape positioned in the notch or a concave shape in which the protruding portion is positioned inside. A concave notch is provided on the outer edge of the terminal,
The side cover is provided with a misalignment restricting portion formed in a convex shape positioned in the notch, and a backlashing portion protruding from the misalignment restricting portion and having a sharp tip,
The electrical junction box according to claim 1, wherein the backlash portion abuts against an inner surface of the notch. A convex protrusion is provided on the outer edge of the terminal,
The side cover is provided with a positional deviation restricting portion formed in a concave shape for positioning the protruding portion on the inside, and a backlashing portion protruding from the inner surface of the positional deviation restricting portion and having a sharp tip,
The electrical connection box according to claim 1, wherein the backlash portion abuts on the protruding portion.   The terminal which comprises the electrical-connection box of any one of Claims 1 thru | or 3.   The side cover which comprises the electrical-connection box of any one of Claims 1 thru | or 3.

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